CVE-2023-48256

Applying security engineering principles during design can require unambiguous protocol and data-format specifications that eliminate divergent interpretations between products.

Secure SDLC practices directly require input sanitization and header handling that prevent CRLF injection.

A.8.25 mandates secure SDLC practices including secure coding guidelines, security requirements, checkpoints, testing (scans/penetration), and developer training that reach HTTP header sanitization and therefore stop most (but not all) instances of CRLF injection from reaching production; a bounded remainder exists in implementation gaps, outsourced development without full assurance, and post-deployment changes.

A.8.26 explicitly lists resilience against SQL injections and input validation as application security requirements (items d and j), which directly addresses improper neutralization of special sequences like CRLF in HTTP headers; however, this is only one slice of a broad requirements-identification control whose coverage of other injection vectors, output handling, and non-web contexts leaves a bounded remainder.

A.8.27 mandates security-by-design principles (including input distrust, data validation/sanitization, secure architecture layers, and design reviews against attack patterns) that reach HTTP header sanitization and would stop most CRLF splitting if applied; this is a minority slice of the weakness because the clause is a general process that depends on specific implementation rigor and does not itself neutralize sequences in every code path or library.

Secure coding standards require neutralization of CRLF sequences before inclusion in HTTP headers.